rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2654 jiffies s: 14321 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 6964 Comm: syz.3.739 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:244 [inline]
RIP: 0010:__sanitizer_cov_trace_const_cmp4+0x4/0x80 kernel/kcov.c:313
Code: 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 03 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 48 8b 04 24 <65> 48 8b 15 04 8c 81 7e 65 8b 0d 05 8c 81 7e 81 e1 00 01 ff 00 74
RSP: 0018:ffffc900001e0898 EFLAGS: 00000046
RAX: ffffffff8188e5a4 RBX: 0000000000000014 RCX: ffff8880242a3b80
RDX: 0000000000000100 RSI: 0000000000000014 RDI: 0000000000002000
RBP: ffffc900001e09a8 R08: dffffc0000000000 R09: ffffed10171e6afa
R10: ffffed10171e6afa R11: 1ffff110171e6af9 R12: ffffffff8c97d7a0
R13: ffffffff8c97d720 R14: ffffc900001e0920 R15: ffffc900001e0940
FS:  00007f3a4da6c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 0000000074701000 CR4: 00000000003506e0
DR0: 0000000000000002 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 perf_trace_buf_alloc+0x24/0x300 kernel/trace/trace_event_perf.c:409
 perf_trace_preemptirq_template+0x149/0x330 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x84/0x500 kernel/rcu/tree_plugin.h:685
Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 fd 86 96 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc900001e0aa0 EFLAGS: 00000206
RAX: 0844edf2ad823000 RBX: 1ffff9200003c15c RCX: 0844edf2ad823000
RDX: dffffc0000000000 RSI: ffffffff8a6c0600 RDI: ffffffff8abef920
RBP: ffffc900001e0b90 R08: dffffc0000000000 R09: fffffbfff211904a
R10: fffffbfff211904a R11: 1ffffffff2119049 R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3b900 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 ieee80211_iterate_active_interfaces_atomic+0x156/0x170 net/mac80211/util.c:826
 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147
 __run_hrtimer kernel/time/hrtimer.c:1747 [inline]
 __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1811
 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1828
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:unwind_next_frame+0x418/0x20b0 arch/x86/kernel/unwind_orc.c:461
Code: 48 89 44 24 48 42 0f b6 04 28 84 c0 0f 85 72 16 00 00 4c 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 7d 16 00 00 0f b7 45 00 <41> 89 c7 41 83 e7 0f 66 41 83 ff 09 0f 87 b6 0d 00 00 42 ff 24 fd
RSP: 0018:ffffc900034f7370 EFLAGS: 00000246
RAX: 0000000000000015 RBX: ffffc900034f74a8 RCX: ffffffff8e0e2f34
RDX: ffffffff8e7d6162 RSI: ffffffff8e0e2f10 RDI: ffffffff8138655f
RBP: ffffffff8e7d6196 R08: 0000000000000009 R09: ffffc900034f74a8
R10: fffff5200069eea1 R11: 1ffff9200069ee95 R12: ffffffff8e7d6192
R13: dffffc0000000000 R14: ffffffff8e0e2f30 R15: ffffffff8e7d6197
 __unwind_start+0x5bb/0x740 arch/x86/kernel/unwind_orc.c:717
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0xda/0x140 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:122
 ref_tracker_alloc+0x173/0x450 lib/ref_tracker.c:91
 __netdev_tracker_alloc include/linux/netdevice.h:4051 [inline]
 netdev_hold include/linux/netdevice.h:4080 [inline]
 rx_queue_add_kobject net/core/net-sysfs.c:1058 [inline]
 net_rx_queue_update_kobjects+0x15a/0x4a0 net/core/net-sysfs.c:1112
 register_queue_kobjects net/core/net-sysfs.c:1772 [inline]
 netdev_register_kobject+0x223/0x310 net/core/net-sysfs.c:2017
 register_netdevice+0x12b9/0x1aa0 net/core/dev.c:10204
 ip6_tnl_create2+0x80/0x140 net/ipv6/ip6_tunnel.c:261
 ip6_tnl_create net/ipv6/ip6_tunnel.c:311 [inline]
 ip6_tnl_locate+0x6fe/0x800 net/ipv6/ip6_tunnel.c:361
 ip6_tnl_siocdevprivate+0x5e9/0xac0 net/ipv6/ip6_tunnel.c:1672
 dev_siocdevprivate net/core/dev_ioctl.c:287 [inline]
 dev_ifsioc+0xb92/0xe90 net/core/dev_ioctl.c:406
 dev_ioctl+0x612/0xea0 net/core/dev_ioctl.c:613
 sock_ioctl+0x67b/0x6e0 net/socket.c:1248
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:870 [inline]
 __se_sys_ioctl+0xfa/0x170 fs/ioctl.c:856
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f3a4cb8f749
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3a4da6c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f3a4cde6090 RCX: 00007f3a4cb8f749
RDX: 0000200000000080 RSI: 00000000000089f1 RDI: 0000000000000010
RBP: 00007f3a4cc13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f3a4cde6128 R14: 00007f3a4cde6090 R15: 00007fff09594268
 </TASK>